I'm trying to track down (in a project I inherited, not wrote) why a
KVO notification is being sent twice. The reason I care is because,
the table contains a variety of types of data, and for one particular
type of data I need to do something special when it is selected, and
then revert that when any other type of data is selected, and this
double-notification is screwing things up.
Here's the stack trace:
-[CLController observeValueForKeyPath:ofObject:change:context:] at
CLController.m:448
NSKVONotify
-[NSObject(NSKeyValueObservingPrivate)
_notifyObserversForKeyPath:change:]
-[NSController _notifyObserversForKeyPath:change:]
-[NSController didChangeValueForKey:]
-[NSTreeController
_didChangeValuesForArrangedKeys:objectKeys:indexPathKeys:]
-[NSTreeController
_selectObjectsAtIndexPathsNoCopy:avoidsEmptySelection:sendObserverNotifications
:]
-[NSTreeController
_selectObjectsAtIndexPaths:avoidsEmptySelection:sendObserverNotifications
:]
-[NSTreeController setSelectionIndexPaths:]
-[NSObject(NSKeyValueCoding) setValue:forKey:]
-[NSObject(NSKeyValueCoding) setValue:forKeyPath:]
-[NSBinder
_setValue:forKeyPath:ofObject:mode:validateImmediately:raisesForNotApplicableKeys:error
:]
-[NSBinder setValue:forBinding:error:]
-[NSOutlineViewBinder tableView:didChangeToSelectedRowIndexes:]
-[_NSBindingAdaptor tableView:didChangeToSelectedRowIndexes:]
-[NSTableView _enableSelectionPostingAndPost]
-[NSTableView mouseDown:]
-[NSOutlineView mouseDown:]
-[NSWindow sendEvent:]
-[NSApplication sendEvent:]
-[NSApplication run]
NSApplicationMain
main at main.m:13
Notice my code only shows up at the last call, in response to the
notification; the keyPath for each notification is the same.
Can anyone give me any tips on how to track down why this notification
is being sent twice?
Thanks!
randy
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